Compression

EMSDN.COM

Compression

NAVIGATION

PPMZ2 Question!

Hello everyone!! This question might seems a little bit simple.I am working with text files of 256 or 512 KB of syze that I need tocompress at maximum. Fist I used ZLib library and then I "discovered"libzip2 library that can achieve better compression rates. A friend ofmine said to me that PPM f...

0 answers | 900 bytes |

PPMZ2 Question!

4 answers | 900 bytes |

RFC: more on the design of "big-deflate"

oh well, got around today for the newer compressor effort to starting tomodify it into something resembling a usable library. if so, maybe I couldput it online or something for anyone wanting to look at it.I guess maybe people can aswer if there is actually any reason for me tocontinue working o...

1 answers | 3845 bytes |

Call for Sessions Proposals: World Congress on Engineering 2007

Call for Special Sessions Proposals From:IAENG: International Association of Engineers (http://www.iaeng.org)Engineering Letters ()World Congress on Engineering 20072-4 July, 2007, London, U.K.The organizing committee of the WRLDENG 2007 invites proposals for thecongress. , the researchers are a...

0 answers | 5570 bytes |

zlib decompression total_out parameter's value is weird

Dear Group members,I am reading a large deflated/gzipped file in chunks. And I want toinflate/ungzip each chunk as it arrives. However, the call to firstinflate gives no error but subsequent calls give data error (-3).I have tried all parameters i.e. Z_NFLUSH, Z_FULL_FLUSH,Z_SYNC_FLUSH.After the...

4 answers | 3172 bytes |

Two new Hutter Prize candidates

I have received two candidates for the Hutter prize within a few hoursof each other.http://cs.fit.edu/~mmahoney/compression/text.htmlUnder the contest rules, there is a 30 day public comment period inwhich anyone may submit independent test results (works, doesn't work,etc) before the prize...

10 answers | 1289 bytes |

bug in my LZW algorithm

Hello,I have the following code for an LZW algorithm, written in databasic(which is a form of basic used on ibm universe, the main quirk of whichbeing that colon ":" is the concatenation operator).It works fine on the example given onHowever, it appears to have a bug when used on a string of 4 i...

0 answers | 4103 bytes |

CPU Usage

All,I've got a client who has a fairly modern Dell PC with a 2.6GhzPentium 4 CPU. It seems to boot up and run okay but certainprocesses seem to take way too much time. The most obviousis extracting and compacting zip files. The machine is clean ofall ad/spy/viri etc and has 768MB of RAM and...

6 answers | 955 bytes |

lzop slowing down while working with gtar

Greetings all,Thanks Mr. lzop is an amazingly fast compression tool I'veused so far in a SMP environment (with the SMP patch by "Dru" athttp://lemley.net/smp.htm) ( V440, 2 X 1GHz UltraSPARC IIIi , 4GBmemory, Solaris 8 ).TEST RUN CPY GZIP -1 LZPLZP-SMP(no compression) (time/size) (time/size...

0 answers | 1303 bytes |

2004-2006 EXECryptor 2 years uncracked

Software piracy! Cracked serial numbers! Thousands of commercialproducts are posted on the warez sites and become available to allevery day! Companies lose millions of dollars every year to softwarepiracy, and faulty protection programs. Shareware developers look forunbreakable protection for th...

3 answers | 3460 bytes |

Add money to your Paypal account with OPRAH k?,KD

Read this message until the end, and you will find out how the money flows in easy !!!!.Follow the steps and it WILL work. Trust me !!!!!.It's NT illegal and it is NT a scam !!!!!.PRVEN N PRAH! Reported in the Wall Street Journal!!!!The only thing you need is : - E-MAIL AC****- PREMIER (FRE...

0 answers | 4497 bytes |

MPEG-4 Profile?

Hello, all. I keep seeing a reference to "MPEG-4 SP at Level3" as aspecification for MPEG-4 video encoders from various vendors. Is "SP"supposed to be a type of profile? I find no reference to it anywhere inIS 14496-2. Thank you for your time and comment. Sincerely,...

0 answers | 293 bytes |